package com.lianniu.web.app.util;

import java.net.InetAddress;
import java.net.UnknownHostException;

import javax.servlet.http.HttpServletRequest;

public class IpUtil {

    public static String getIP4(HttpServletRequest request){
        String ip = request.getHeader("X-Real-IP");
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
        ip = request.getHeader("Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
        ip = request.getHeader("WL-Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
        ip = request.getHeader("HTTP_CLIENT_IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
        ip = request.getHeader("HTTP_X_FORWARDED_FOR");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
        ip = request.getRemoteAddr();
        }
        if(ip.equals("127.0.0.1") || ip.equals("0:0:0:0:0:0:0:1")){  
            //根据网卡取本机配置的IP  
            InetAddress inet=null;  
            try {  
                inet = InetAddress.getLocalHost();  
            } catch (UnknownHostException e) {  
                e.printStackTrace();  
            }  
            ip= inet.getHostAddress();  
        }
        return ip;
 
    }
}
